\usepackage[a5paper, margin = 1.5cm]{geometry}

\usepackage{xeCJK}
\usepackage{xeCJKfntef}

\usepackage{titlesec}
\setcounter{secnumdepth}{0}
\setcounter{tocdepth}{5}
\pagestyle{empty}

\usepackage{indentfirst}
\setlength\parindent{2em}
